%0 Journal Article %A P. A. Bezirganyan %A K. N. Bezirganian %A L. G. Gasparyan %A V. P. Mkrtchyan %T The investigation of the imperfection of X-ray interferometer composed of different thickness crystals %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 1988 %P 54-60 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_1988_1_a8/ %G ru %F UZERU_1988_1_a8